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Polyamide toughening agent as well as preparation method and use thereof

A technology of toughening agent and polyamide, which is applied in the field of polyamide toughening agent and its preparation, can solve the problems of unreachable and poor mechanical properties of polyamide such as tensile strength and bending strength, and achieve high production efficiency and increased production efficiency. Outstanding toughness effect, good tensile strength effect

Inactive Publication Date: 2014-12-03
DONGGUAN CALVIN PLASTIC & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods of modifying polyamides can toughen polyamides to a certain extent, they also make the mechanical properties of polyamides such as tensile strength and bending strength significantly worse, thus failing to meet the ideal requirements.

Method used

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  • Polyamide toughening agent as well as preparation method and use thereof
  • Polyamide toughening agent as well as preparation method and use thereof
  • Polyamide toughening agent as well as preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1. Proportionally weigh the following components and their parts by weight:

[0038]

[0039] 2. Preparation method:

[0040] (1) Put the MAH, DCP and industrial white oil in the formula amount into the reactor for premixing, control the temperature of the reactor at 40°C, and the stirring rate at 30r / min to obtain the premixed material.

[0041] (2) Put POE, PA, and PP into a small vertical medium-speed mixer, stir at a stirring rate of 70r / min for 3 minutes, then add the premixed material obtained in step (1), and continue stirring for 4 minutes to make it evenly dispersed. A preliminary mixture is obtained.

[0042] (3) Add the preliminary mixture into the twin-screw extruder for extrusion and granulation, control the processing temperature at 170-180°C, the speed of the main machine at 30HZ, the speed of feeding at 15HZ, the current of the main machine at 135-150A, and the speed of the pelletizer 30HZ, the vacuum pressure is greater than 0.4MPa, and the product...

Embodiment 2

[0046] 1. Proportionally weigh the following components and their parts by weight:

[0047]

[0048] 2. Preparation method:

[0049] (1) Put the MAH, GMA, and industrial white oil in the formula amount into the reactor for premixing, control the temperature of the reactor at 40° C., and the stirring rate at 30 r / min to obtain the premixed material.

[0050](2) Put POE, PA, and PP into a small vertical medium-speed mixer, stir at a stirring rate of 70r / min for 3 minutes, then add the premixed material obtained in step (1), and continue stirring for 4 minutes to make it evenly dispersed. A preliminary mixture is obtained.

[0051] (3) Add the preliminary mixture into the twin-screw extruder for extrusion and granulation, control the processing temperature at 170-180°C, the speed of the main machine at 30HZ, the speed of feeding at 15HZ, the current of the main machine at 135-150A, and the speed of the pelletizer 30HZ, the vacuum pressure is greater than 0.4Mpa, and the prod...

Embodiment 3

[0055] 1. Proportionally weigh the following components and their parts by weight:

[0056]

[0057] 2. Preparation method:

[0058] (1) Put the formulated amount of MAH, DCP and industrial white oil into the reactor for premixing, control the temperature of the reactor at 50°C, and the stirring rate at 40r / min to obtain the premixed material.

[0059] (2) Put POE, PA, and PP into a small horizontal low-speed mixer, stir at a stirring rate of 25r / min for 5 minutes, then add the premixed material obtained in step (1), and continue stirring for 5 minutes to disperse it evenly, and obtain Preliminary mix of materials.

[0060] (3) Add the preliminary mixed material obtained in step 2 into a twin-screw extruder for extrusion and granulation, control the processing temperature at 170-180°C, the speed of the main machine at 40HZ, the speed of feeding at 20HZ, the current of the main machine at 140-155A, The rotational speed of the granulator is 21HZ, and the vacuum pressure is ...

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Abstract

The invention provides a polyamide toughening agent as well as a preparation method and use thereof. The polyamide toughening agent is mainly prepared from the following raw materials in parts by weight: 50-95 parts of an ethylene-octene copolymer elastomer, 0.5-2.5 parts of a grafting monomer, 5-50 parts of polyolefin, 0.05-0.5 part of an initiator and 5-20 parts of polyamide. The toughening agent provided by the invention is simple in preparation method, have good mechanical property and low-temperature impact toughness when being used for toughening the polyamide, and can be widely applied to modification of polyamide materials in the fields of inner and outer decorative parts of automobiles, electric tools, rail bases, transformers, oil tubes and the like.

Description

technical field [0001] The invention relates to the technical field of polymer modification, in particular to a polyamide toughening agent and its preparation method and application. Background technique [0002] Polyamide has the advantages of high mechanical strength, wear resistance, heat resistance, corrosion resistance, solvent resistance and good electrical insulation performance. It has been widely used in the fields of automotive interior and exterior trim parts, electric tools, rail bases, transformers and oil pipes. Its demand It ranks first among the five general-purpose engineering plastics. However, the notched impact performance of polyamide is poor, and it is brittle at low temperature and dry state, which seriously limits the application range of polyamide products. There is an urgent need for a new type of polyamide toughening agent in the market. The polyamide can have good toughness and low temperature resistance under the premise of basically maintaining...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L51/06C08L23/06C08L23/12C08L77/00C08F255/02
CPCC08L51/06C08F255/02C08L77/02C08L2205/02C08L2205/03C08L2205/035
Inventor 沈渭芳孔作万梁惠萍王安民
Owner DONGGUAN CALVIN PLASTIC & TECH
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